EP 2314727 B1 20160323 - Nickle-based superalloys and articles
Title (en)
Nickle-based superalloys and articles
Title (de)
Nickelbasierte Superlegierungen und Artikel
Title (fr)
Superalliages à base de nickel et articles
Publication
Application
Priority
US 57086109 A 20090930
Abstract (en)
[origin: EP2314727A1] Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit oxidation resistance better than or comparable to rhenium-bearing single-crystal alloys, and creep rupture life comparable to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 µm, if need be, so that further improvements in mechanical properties in the articles can be seen.
IPC 8 full level
C22C 19/05 (2006.01); C30B 29/52 (2006.01)
CPC (source: CN EP US)
B22D 27/04 (2013.01 - CN); C22C 19/057 (2013.01 - CN EP US); C30B 11/00 (2013.01 - CN EP US); C30B 28/06 (2013.01 - EP US); C30B 29/52 (2013.01 - CN EP US); C30B 29/605 (2013.01 - EP US)
Citation (opposition)
Opponent : Siemens Aktiengesellschaft,
- EP 2218798 A2 20100818 - UNITED TECHNOLOGIES CORP [US]
- WO 2009085420 A1 20090709 - GEN ELECTRIC [US], et al
- FR 2478128 A1 19810918 - ROLLS ROYCE [GB]
- US 2002164263 A1 20021107 - HARRIS KENNETH [US], et al
- WO 2009032579 A1 20090312 - GEN ELECTRIC [US], et al
- FR 2220589 A1 19741004 - DEUTSCHE EDELSTAHLWERKE GMBH [DE]
- JP 2000144289 A 20000526 - UNITED TECHNOLOGIES CORP
- DE 4126989 A1 19920312 - GEN ELECTRIC [US]
- US 3720509 A 19730313 - DANESI W, et al
- EP 1054072 A1 20001122 - ABB ALSTOM POWER CH AG [CH]
- GB 2071695 A 19810923 - ROLLS ROYCE
- US 2006182649 A1 20060817 - TAMADDONI MICHAEL [US], et al
- JP S63213632 A 19880906 - NAT RES INST METALS
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2314727 A1 20110427; EP 2314727 B1 20160323; CN 102031419 A 20110427; CN 105714153 A 20160629; JP 2011074493 A 20110414; US 2011076181 A1 20110331
DOCDB simple family (application)
EP 10179689 A 20100924; CN 201010507984 A 20100928; CN 201610152850 A 20100928; JP 2010216273 A 20100928; US 57086109 A 20090930